Tricoelodus is an extinct genusofadianthid litopterns that lived during the Late Oligocene in what is now Argentina and Bolivia. Fossils of this genus have been found in the Sarmiento Formation of Argentina and the Salla FormationofBolivia.[1]
| Tricoelodus ↓ | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Litopterna |
| Family: | †Adianthidae |
| Subfamily: | †Adianthinae |
| Genus: | †Tricoelodus |
| Type species | |
| †Tricoelodus bicuspidatus Ameghino, 1897 | |
| Species | |
| |
Tricoelodus was named by Ameghino in 1897.[2]
Tricoelodus was first assigned to Mesorhinidae by Ameghino in 1897. It was then assigned to Adianthinae by Cifelli & Soria in 1983; and to Adianthidae by Cifelli in 1983 and by Carroll in 1988. [2]